Category Archives: GREEN BIORENEWABLE. BIOCOMPOSITES

TENSILE TEST

Tensile tests on fibers were conducted on a tow (strand) disassembled from the fab­ric. The tows in the longitudinal direction in the fabric were separated from the ones in the orthogonal direction. Tests were carried out for both series separately. The tensile properties of the fiber tow were determined at room temperature and 50% relative humidity on an Instron 5548 […]

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EFFECT OF HIGHER ASPECT RATIO NANO-CELLULOSE

The highly transparent and flexible films prepared using NFCs exhibited a dras­tic improvement mechanical properties, with a maximum enhancement in Young’s modulus of 78% and 150% for high molecular weight chitosan and water-soluble high molecular weight chitosan (WSHCH), respectively with 20 wt.% of NFC load­ing; and of 200% and 320% for low molecular weight chitosan and water-soluble low molecular weight […]

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1.3.2. SPIDER SILK PRODUCTION IN LARGE QUANTITIES FOR APPLICATIONS

In order to manufacture vast quantities of purified spider silk protein for wet spin­ning methodologies, the expression system for protein production needs to be ro­bust, cost-effective and offer rapid biochemical strategies to purify the recombinant fibroins for the spinning process. At least five other natural fibroin cDNA sequences have been used for recombinant expression, which include MaSp2, the tubuliform spidroins […]

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PREPARATION AND CHARACTERIZATION OF PGVNC

The T’s measured by DMA for SPE/TA(1/1) and SPE/QC(1/1.2) were 95 °C and 86 °C, respectively, whose values were much lower than that of the cured conven­tional DGEBA (>100 °C). Therefore, when industrially available and inexpensive SPE is combined with a bio-based phenolic hardener, the hardener having a lower hydroxy value and a higher aromatic content than TA should be […]

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WATER ABSORPTION

The water absorption of jute-based biocomposite samples were measured according to ASTM D 5708. This test is carried out to determine the amount of water absorbed and performance of the materials in water environments. This is very similar to the moisture absorption test. Three square shaped samples of 3.0 cm x 3.0 cm of 5% natural rubber based jute composite […]

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